Line of Sight Calculator – Radio Horizon on a 3D Map
Visualize radio line-of-sight between two points on the photorealistic 3D Earth. Perfect for ham radio operators, WISP planners, and microwave link engineers who need to validate antenna placement and Fresnel zone clearance.
Select two points on the photorealistic 3D globe to define your radio path.
Adjust antenna heights at both ends to account for tower or mast elevation.
Instant elevation profile with Earth curvature and line-of-sight visualization.
Fresnel zone clearance calculations for VHF, UHF, and microwave frequencies.
When to use this line-of-sight tool
Planning a VHF/UHF repeater link? Designing a WISP backbone? This tool samples the terrain between your two endpoints, accounts for Earth curvature, and shows you whether a direct radio path exists. Adjust antenna heights to see how tower elevation improves clearance.
Combine this with the elevation finder to validate tower site elevations, or use the distance calculator to measure exact path lengths for link budgets.